Monthly climate guide
Rijeka weather in May
With highs near 18°C (64°F) and lows around 8°C (46°F), May feels mild in Rijeka. Rainfall averages about 122 mm (wet) and the sky is often cloudy. Daytime highs are 3°C warmer than April and 4°C cooler than June.
What stands out in May
- Seasonally, May counts as late spring in Rijeka.
- Temperatures are climbing — June is around 5°C warmer.
- Rijeka is usually about 2°C cooler than Krk, 30 km away, in May.
Avg high
18°C
64°F
Avg low
8°C
46°F
Rainfall
122 mm
wet
Humidity
78%
relative
Sky
66%
cloud · often cloudy
Rijeka weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 3°C / 38°F | -3°C / 27°F | 80 mm | 91% | 74% |
| February | 4°C / 39°F | -3°C / 26°F | 112 mm | 90% | 75% |
| March | 9°C / 49°F | 0°C / 32°F | 81 mm | 84% | 63% |
| April | 15°C / 58°F | 4°C / 39°F | 76 mm | 78% | 64% |
| May | 18°C / 64°F | 8°C / 46°F | 122 mm | 78% | 66% |
| June | 22°C / 72°F | 12°C / 54°F | 92 mm | 76% | 56% |
| July | 24°C / 76°F | 14°C / 58°F | 77 mm | 74% | 49% |
| August | 25°C / 77°F | 14°C / 57°F | 80 mm | 73% | 43% |
| September | 20°C / 68°F | 10°C / 50°F | 138 mm | 79% | 58% |
| October | 15°C / 59°F | 6°C / 43°F | 140 mm | 85% | 65% |
| November | 9°C / 49°F | 3°C / 37°F | 155 mm | 91% | 75% |
| December | 5°C / 41°F | -2°C / 29°F | 101 mm | 92% | 70% |
What to pack for May
- A warm sweater or fleece for layering
- A mid-weight jacket
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is May a good time to visit Rijeka?
Compare the months in the chart above to find your ideal window.
Best time to visit Rijeka →Other Croatia cities in May
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Rijeka weather in May. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/croatia/rijeka/may
<a href="https://weathercompare.eu/weather/croatia/rijeka/may">Rijeka weather in May</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/croatia/rijeka" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Rijeka weather in May"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/croatia/rijeka/may">Rijeka weather in May</a> – WeatherCompare</p>
Rijeka in May: quick answers
Is May a good time to visit Rijeka?
May is one of the wetter months in Rijeka, with about 122 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Rijeka in May?
Average highs are about 18°C (64°F) and average lows about 8°C (46°F), based on 10 years of daily data.
Does it rain a lot in Rijeka in May?
Rijeka typically gets around 122 mm of rain in May — wet.
Figures are long-term averages for the area around Rijeka (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.